Brittle Star Movement (image) Brown University Caption The brittle star doesn't turn as most animals do. It simply designates another of its five limbs as its new front and continues moving forward. Credit Henry Astley/Brown University Usage Restrictions Credit required Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.